package edu.cicese.graphics;

import javax.swing.CellRendererPane;
import javax.swing.JComponent;
import javax.swing.JTextArea;
import javax.swing.JToolTip;
import javax.swing.plaf.ComponentUI;
import javax.swing.plaf.basic.BasicToolTipUI;
import java.awt.Dimension;
import java.awt.Graphics;

/**
 * Created by: Eduardo Quintana Contreras
 * Date: 23/03/11
 * Time: 05:36 PM
 */
public class MultiLineToolTipUI extends BasicToolTipUI {
	static MultiLineToolTipUI sharedInstance = new MultiLineToolTipUI();
//	Font smallFont;
	static JToolTip tip;
	protected CellRendererPane rendererPane;

	private static JTextArea textArea ;

	public static ComponentUI createUI(JComponent c) {
	    return sharedInstance;
	}

	public MultiLineToolTipUI() {
	    super();
	}

	public void installUI(JComponent c) {
	    super.installUI(c);
		tip = (JToolTip)c;
	    rendererPane = new CellRendererPane();
	    c.add(rendererPane);
	}

	public void uninstallUI(JComponent c) {
		super.uninstallUI(c);

	    c.remove(rendererPane);
	    rendererPane = null;
	}

	public void paint(Graphics g, JComponent c) {
	    Dimension size = c.getSize();
	    textArea.setBackground(c.getBackground());
		rendererPane.paintComponent(g, textArea, c, 1, 1,
					    size.width - 1, size.height - 1, true);
	}

	public Dimension getPreferredSize(JComponent c) {
		String tipText = ((JToolTip)c).getTipText();
		if (tipText == null)
			return new Dimension(0,0);
		textArea = new JTextArea(tipText );
	    rendererPane.removeAll();
		rendererPane.add(textArea );
		textArea.setWrapStyleWord(true);
		int width = ((JMultiLineToolTip)c).getFixedWidth();
		int columns = ((JMultiLineToolTip)c).getColumns();

		if( columns > 0 )
		{
			textArea.setColumns(columns);
			textArea.setSize(0,0);
		textArea.setLineWrap(true);
			textArea.setSize( textArea.getPreferredSize() );
		}
		else if( width > 0 )
		{
		textArea.setLineWrap(true);
			Dimension d = textArea.getPreferredSize();
			d.width = width;
			d.height++;
			textArea.setSize(d);
		}
		else
			textArea.setLineWrap(false);


		Dimension dim = textArea.getPreferredSize();

		dim.height += 1;
		dim.width += 1;
		return dim;
	}

	public Dimension getMinimumSize(JComponent c) {
	    return getPreferredSize(c);
	}

	public Dimension getMaximumSize(JComponent c) {
	    return getPreferredSize(c);
	}
}
